Phetrographical features of poorly consolidated sediments of neogene age at Mt. Moslavačka gora : master's thesis

Committee Members

Josipa Velić Tomislav Malvić Uroš Barudžija

Granter

University of ZagrebFaculty of Mining, Geology and Petroleum Engineering

Lower level organizational units

Department of Geology and Geological Engineering

Place

Zagreb

State

Croatia

Scientific field, discipline, subdiscipline

NATURAL SCIENCESGeologyGeology and Paleontology

Study programme type

university

Study level

graduate

Study programme

Geology

Academic title abbreviation

mag. geol.

Genre

master's thesis

Language

Croatian

Defense date

2014-09-19

Parallel abstract (English)

Abstract: The area of Moslavačka gora is built from rocks of various lithological content. The research objects were poorly consolidated Miocene (Pontian) and Pliocene sediments. The goals of research were clay and sand sediments that emerge inside brooks, torrents and as a consequence of road cutting. The perceived outcrops were described in detail and sampled. Furthermore, photo documentation was also made, during which a total of 45 samples were gathered. The samples were then divided in a series of fractions using the sieving method. The fossil content inside the divided sediment fractions was excluded and described. Due to the absence of a valid procedure of making microscopic thin sections from poorly consolidated sediments, a method using hard plates was devised to enable the procedure. Analysis of mineral content was made, dividing the content to "clays" and sands. Inside each sample, the mineral content of more than 150 grains of sediments was determined, which amounts to more than 5000 grains from all thin sections combined. Based on the latter, a statistic analysis of mineral content was made. In the standardized samples, of whose age we are certain; a significant difference was found in the variety of contents of certain minerals. Mostly, those are magmatic and metamorphic quartz and quartzite grains. Accordingly, the samples were divided to the Miocene and Pliocene categories. A comparison with Pleistocene samples from hydrogeological borehole nearby Črnkovec was also made. Based on laboratory and field research, as well as statistic analysis, the conclusions about accuracy of the basic geology map and the development of study area during Miocene and Pliocene were made. The following conclusions could have been more accurate, if a bigger sample size, of according age, were taken, which would, in turn, enable the making of areal mineral diversity maps of specific minerals and mineral collectives.